Air bearings (also known as aerostatical or aerodynamical bearings) are bearings that use a thin film of pressurized air to provide an exceedingly low friction load-bearing interface between surfaces. The two surfaces do not touch. As they are contact-free, air bearings avoid the traditional bearing-related problems of friction, wear, particulates...
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http://en.wikipedia.org/wiki/Air_bearing
A bearing which uses an air cushion to separate its rotating surfaces. See also: Bearing.
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https://www.encyclo.co.uk/local/20687
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